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  <title>基于区域设置的字符串比较</title>
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  <div id="layout-content"><div id="function.strcoll" class="refentry">
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  <h1 class="refname">strcoll</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.5, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">strcoll</span> &mdash; <span class="dc-title">基于区域设置的字符串比较</span></p>

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 <div class="refsect1 description" id="refsect1-function.strcoll-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>strcoll</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$string1</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$string2</code></span>): <span class="type">int</span></div>

  <p class="para rdfs-comment">
   注意该比较区分大小写。和 <span class="function"><a href="function.strcmp.html" class="function">strcmp()</a></span> 不同，该函数不是二进制安全的。
  </p>
  <p class="para">
   <span class="function"><strong>strcoll()</strong></span> 使用当前区域设置进行比较。如果当前区域为 C 或 POSIX，该函数等同于 <span class="function"><a href="function.strcmp.html" class="function">strcmp()</a></span>。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.strcoll-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">string1</code></dt>

     <dd>

      <p class="para">
       第一个字符串。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">string2</code></dt>

     <dd>

      <p class="para">
       第二个字符串。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.strcoll-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
     如果 <code class="parameter">string1</code> 小于
   <code class="parameter">string2</code> 返回 &lt; 0；
   如果 <code class="parameter">string1</code>
   大于 <code class="parameter">string2</code>
   返回 &gt; 0；如果两者相等，返回 0。
  </p>
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 <div class="refsect1 seealso" id="refsect1-function.strcoll-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.preg-match.html" class="function" rel="rdfs-seeAlso">preg_match()</a> - 执行匹配正则表达式</span></li>
    <li class="member"><span class="function"><a href="function.strcmp.html" class="function" rel="rdfs-seeAlso">strcmp()</a> - 二进制安全字符串比较</span></li>
    <li class="member"><span class="function"><a href="function.strcasecmp.html" class="function" rel="rdfs-seeAlso">strcasecmp()</a> - 二进制安全比较字符串（不区分大小写）</span></li>
    <li class="member"><span class="function"><a href="function.substr.html" class="function" rel="rdfs-seeAlso">substr()</a> - 返回字符串的子串</span></li>
    <li class="member"><span class="function"><a href="function.stristr.html" class="function" rel="rdfs-seeAlso">stristr()</a> - strstr 函数的忽略大小写版本</span></li>
    <li class="member"><span class="function"><a href="function.strncasecmp.html" class="function" rel="rdfs-seeAlso">strncasecmp()</a> - 二进制安全比较字符串开头的若干个字符（不区分大小写）</span></li>
    <li class="member"><span class="function"><a href="function.strncmp.html" class="function" rel="rdfs-seeAlso">strncmp()</a> - 二进制安全比较字符串开头的若干个字符</span></li>
    <li class="member"><span class="function"><a href="function.strstr.html" class="function" rel="rdfs-seeAlso">strstr()</a> - 查找字符串的首次出现</span></li>
    <li class="member"><span class="function"><a href="function.setlocale.html" class="function" rel="rdfs-seeAlso">setlocale()</a> - 设置区域信息</span></li>
   </ul>
  </p>
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